Step 1: You Need
- some copper coins
- some paper
- aluminium foil
Step 2: Cut Down Foil&paper
cut down the aluminium foil as shape as coin,and like that cut down the paper as shape as coin
Step 3: Sink the Paper
sink those round shape paper into a vinegar for 3 munite.
Step 4: Make Parallel Position
first put a coin,then put a round shape aluminium foil on coin,then put a oval shape of paper that found from vinegar on coin&aluminium foil. Repeat this pattern.
Step 5: Light a LED
then those coin's a pole is positive and opposite pole is negative.and light a Led and you can find 5 v from ten coins but low amp.